Building-block.



R. W. RAFTIS.

BUILDING BLOCKv APPLICATION I'ILIJD APR.4,1913,

1,080,367; Patented Dec. 2, 1913.

W|TNESSES INVENTOI -UNITEDSTATES rs'rsrrr ornrion,

RICHABDIW. LEKF'IIS, OF CHICAGO, ILLINOIi, ASSIGliOB. TO NATIONAL F112 PROOFING I COMPANY, PITTSBfJ'RGH, PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA.

BUILDING-BLOCK.

Patented Dec. 2. i913.

Serial E0. 758,782.

1 '0 all whom it may concern:

",c it known that I RICHARD 1V. Barns, a citizen of the United States, residing at Chicago. in the county of Cool: and State of none-n. have invented a new and useful ln'i n-orement in lluil ling-l3locks, o'f which the following is a fulhclear, and e, ;act descriptii-m, n'.*fercnc-c being had to th accompanying drawings, fol-min" part of this specificati n, in ,which-- Figure l is a plan View showing a portion of a course of blocks en'ib'odying my inven lion, and Fig. 2 is a perspective view of one einl of one of the'blocks.

My invention has relation to hollow buildin; blocks of clay, tori-a ccttn, etc., and

designed to prorido a block having a greater loud-bearing capacity, and a greater resistance against shocks, \Fll'lll pressure, and other strains incidental thereto, than the blocks hcretofiire used.

My invention also provides rebuilding block which will insure breaks in the mortar jo nts, there being no continuous mortar jbintg between adjacent blocks which can act as conductors of moisture or heat.

Referring; to the accmn imnying drawings, the numeral designates-the side walls of the blocks irnd'B the end walls thereof, these walls being formed on their outer fares with suitable bonding projections nntl recesses, such as indicated at l. Inch tntl wall at the central portion thereof is deflected inwimlly and thence outwardly, as shown at 3. there y forming vertical V-shnpecl recess cxlcmling the full dimension of the block.

The block has a central web 3 of lllniu -hll which is connected at 1 f its angles Ifillu npices of the inset portion. walls I have shown the webs (3 5 being thicker than the web 7 but having air spaces 5 formed therein.

lhe several webs are symmetric-ally arranged, forming the our large syn'unctricnl openings 9 through the block giml also thev central opening 10 and thcsmallcr openings S in the web 6. The webs are all of substantially uniform thickness and their thickness is' o preferably-nnil'orin with the thickness of the sitlc an l cn l wal s. The diagonal arrangement of the web? 5 and of the inset portions 3", with the-connecting of the einl j niond web at the cent-er. bracing webs conbeing entirely broken at the insetportions at the ends of the blocks. This bneaking of the mortar joints prevents the'direct conduction of moisture through the wall it such joints, as well as the conduction of heat. The V-shapcd insets of each two aa acent tiles form the inclose-cl air spaces 12. it will be noted thait'lhese air spaces 12 are of gen erally similar form and Dimensions to the air spaces 10 at the centers of the block, and therefore in successive courses of tiles, with the tiles, placed to break joints in such courses, the openings 10 and 12 will register with each other and form substantially continuous air spaces. 1 do not, however, limit myself to the particular V-form of recesses which I have shown and destribed, as the sl ape of these may he changed; and

i'fr'tlesi'rcd the shape of the openings 10 may also he changed corresponding with the form of said recesses.

What I claim is:

1. A hollow." building block having a V- shaperl inset in each of its end walls, a (liamond web at the center, bracing webs connet-ting the spices of the insets with the :uijgn-cnl inn 3 of the (Ii-amour: web, and short bra-icing wchs connecting the other two hours of the diamond web with the side i \Il'zllw of the block; substantially as described.

A. hollow building block having a V- shaped inset 111 each of its end walls. a dim her-ling the apices or the insets with the adjacent apices of the diamond web, and sl'v'rt bracing webs connecting the other two apices of the diamond web with the side walls of the block, thelast named bracing webs having air-spaces therein; substantially described.

". i hollow building block having a V- shaped inset in each of its end walls. :1 diamon l web at the center, bracing webs connecting the apices of the lfbels' with the ad acent apices of the diamond web, and

some

, adjacent apiece of the diamond web, and

short bracing Webs connecting the other two apices of the diamond'web with the side walls of the block, all of said webs being of substantially uniform thickness; substanlially described.

4. bellow building block having a V- shaped inset in each of its end Walls, 21 diamund we atthe center, bracing webs connecting the apices of the insets with the short bracing webs connecting the other two u it-es of the diamond web with the side Walls of the block, all of sziid \vebsming of,

substantially uniform thickness and of substantiall the same thicknese as the side and 15 end we! s of the block; substantiglly as olescribed.

In testimony whereof, I have hereunto set my hand.

RICHARD W. RAFTIS.

W'itnesses: 

